89111 has 4 divisors (see below), whose sum is σ = 97224. Its totient is φ = 81000.

The previous prime is 89107. The next prime is 89113. The reversal of 89111 is 11198.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 89111 - 2² = 89107 is a prime.

It is a Duffinian number.

89111 is a modest number, since divided by 111 gives 89 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4040 + ... + 4061.

It is an arithmetic number, because the mean of its divisors is an integer number (24306).

2⁸⁹¹¹¹ is an apocalyptic number.

89111 is the 134-th centered decagonal number.

89111 is a deficient number, since it is larger than the sum of its proper divisors (8113).

89111 is a wasteful number, since it uses less digits than its factorization.

89111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8112.

The product of its digits is 72, while the sum is 20.

The square root of 89111 is about 298.5146562566. The cubic root of 89111 is about 44.6660045445. Note that the first 3 decimals are identical.

It can be divided in two parts, 891 and 11, that multiplied together give a square (9801 = 99²).

The spelling of 89111 in words is "eighty-nine thousand, one hundred eleven".